DENIERS SAY:

The Greenland ice sheet is melting at a glacial rate.

SCIENCE SAYS:

Even when Greenland loses a small fraction of its ice, sea level goes up in a big way.

Greenland’s massive ice sheet contains enough ice to raise global sea level by about 20 feet. The total collapse of the Greenland ice sheet isn’t going to happen anytime soon, but ice loss from Greenland is accelerating. Research has shown that even a relatively small loss of ice from Greenland will result in significant sea level rise. And the more the ice sheet melts — we’re talking hundreds of billions of tons of ice a year — the more that rising seas endanger low-lying coastal communities around the world.

Additional info from Skeptical Science

The latest measurements continue to measure accelerating mass loss from the Greenland ice sheet. The latest data from the Gravity Recovery and Climate Experiment (GRACE) satellites show that Greenland mass loss has been steadily increasing since satellites began measurements in 2002 (Figure 1). The mass loss started spreading up the northwest margin a few years ago.